force use of pandoc version >= 3.1.12.2
The `bin/pandoc-wrapper.sh` tool will verify that the ssytem has a recent enough version of `pandoc(1)`. We explain why we insist on `pandoc(1)`. version >= 3.1.12.2 in comments where the $PANDOC_MIN_VERSION is set. Added `--wrap=preserve` as a default argument to `pandoc(1)`. While this change will impact every HTML file generated, we believe this will improve the ability of someone to look at the generated HTML and correlate with the original markdown. Changed `bin/pandoc-wrapper.sh` VERSION from "1.4.2 2024-03-17" to "1.4.3 2024-03-18". Performed `make www` to achieve all of the above and to generate HTML using the new `--wrap=preserve` `pandoc(1)` mode.
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@@ -153,80 +153,69 @@ Location: <a href="../../location.html#JP">JP</a> - <em>Japan</em>
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<h2 id="try">Try:</h2>
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<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.sh</span></span></code></pre></div>
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<h2 id="judges-remarks">Judges’ remarks:</h2>
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<p>A <a href="https://en.wikipedia.org/wiki/Pi">pi</a>/<a
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href="https://en.wikipedia.org/wiki/E_(mathematical_constant)">e</a>
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printing quasi-[quine](https://en.wikipedia.org/wiki/Quine_(computing)
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in <a href="https://en.wikipedia.org/wiki/ASCII_art">ASCII art</a> with
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a compressed font in it; what else to wish for in this program? <a
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href="https://en.wikipedia.org/wiki/Virtual_machine">Virtual machine</a>
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emulation?</p>
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<p>A
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<a href="https://en.wikipedia.org/wiki/Pi">pi</a>/<a href="https://en.wikipedia.org/wiki/E_(mathematical_constant)">e</a>
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printing quasi-[quine](https://en.wikipedia.org/wiki/Quine_(computing) in <a href="https://en.wikipedia.org/wiki/ASCII_art">ASCII
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art</a> with a compressed font in it; what
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else to wish for in this program? <a href="https://en.wikipedia.org/wiki/Virtual_machine">Virtual
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machine</a> emulation?</p>
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<h2 id="authors-remarks">Author’s remarks:</h2>
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<p>Yeah, “Again”. Sorry. But I don’t feel guilty or uncomfortable.</p>
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<p>This entry is based on ‘over-used themes’ such as self reproducing
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program and <a href="https://en.wikipedia.org/wiki/Pi">pi</a> or <a
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href="https://en.wikipedia.org/wiki/E_(mathematical_constant)">e</a>)
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computation. I know you’re tired of them.</p>
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program and <a href="https://en.wikipedia.org/wiki/Pi">pi</a> or
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<a href="https://en.wikipedia.org/wiki/E_(mathematical_constant)">e</a>) computation. I
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know you’re tired of them.</p>
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<p>But have you ever seen them <strong>all-in-one</strong>?</p>
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<h3 id="what-it-is">What it is</h3>
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<p>This program generates a new program in the shape of the Greek letter
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<code>pi</code>. Then, the generated program:</p>
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<ul>
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<li>computes 3 digits of pi and prints it as an ASCII-art program
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that:</li>
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<li>computes 4 digits of pi and prints it as an ASCII-art program
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that:</li>
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<li>computes 5 digits of pi and prints it as an ASCII-art program
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that:</li>
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<li>computes 6 digits of pi and prints it as an ASCII-art program
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that:</li>
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<li>computes 3 digits of pi and prints it as an ASCII-art program that:</li>
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<li>computes 4 digits of pi and prints it as an ASCII-art program that:</li>
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<li>computes 5 digits of pi and prints it as an ASCII-art program that:</li>
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<li>computes 6 digits of pi and prints it as an ASCII-art program that:</li>
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<li>…</li>
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</ul>
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<p>One more thing… When you give a command line argument <code>e</code>
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to the first program, the generated one will compute <a
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href="https://en.wikipedia.org/wiki/E_(mathematical_constant)">Napier’s
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constant</a>) rather than pi.</p>
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<p>One more thing… When you give a command line argument <code>e</code> to the
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first program, the generated one will compute <a href="https://en.wikipedia.org/wiki/E_(mathematical_constant)">Napier’s
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constant</a>)
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rather than pi.</p>
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<h3 id="obfuscation">Obfuscation</h3>
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<p>This program itself is in the shape of a <a
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href="https://en.wikipedia.org/wiki/Tap_(valve)">spigot</a>. This is
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derived as an analogy with <a
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href="https://en.wikipedia.org/wiki/Spigot_algorithm">spigot
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algorithm</a> which infinitely computes the value of a mathematical
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constant such as <a href="https://en.wikipedia.org/wiki/Pi">pi</a> or <a
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href="https://en.wikipedia.org/wiki/E_(mathematical_constant)">e</a>.</p>
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<p>The two sets of programs, <code>314*.c</code> and
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<code>271*.c</code>, are almost the same except their shape and constant
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computational part. I tailored the common part to parse in both shapes
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(<code>3.14...</code> and <code>2.71...</code>), by tweaking the
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computational order and adding meaningless code fragments.</p>
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<p>On the other hand, to make it fit inside one screen (80 x 25), my
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program is shortened properly, more than it looks. (As you may know, <a
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href="https://en.wikipedia.org/wiki/Quine_(computing)">quines</a> need
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to make its program size doubled.) For example, this program involves
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3x5 bitmap font data of ten characters (<code>0</code> –
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<code>9</code>), as just 20 bytes: <code>G1%xJ{;Q7wunmuGuu%uu</code>. We
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can decode character <code>n</code> as
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<code>275*s[n+10] - 8*s[n] - 8</code>. I solved the system of <a
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href="https://en.wikipedia.org/wiki/B%C3%A9zout%27s_identity">Bézout’s
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identity</a> to find the magic string, with the aid of a brute force.
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See <code>find-font-table.rb</code> in detail.</p>
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<p>This program itself is in the shape of a
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<a href="https://en.wikipedia.org/wiki/Tap_(valve)">spigot</a>. This is derived as an
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analogy with <a href="https://en.wikipedia.org/wiki/Spigot_algorithm">spigot algorithm</a>
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which infinitely computes the value of a mathematical constant such as
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<a href="https://en.wikipedia.org/wiki/Pi">pi</a> or
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<a href="https://en.wikipedia.org/wiki/E_(mathematical_constant)">e</a>.</p>
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<p>The two sets of programs, <code>314*.c</code> and <code>271*.c</code>, are almost the same
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except their shape and constant computational part. I tailored the
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common part to parse in both shapes (<code>3.14...</code> and <code>2.71...</code>), by
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tweaking the computational order and adding meaningless code fragments.</p>
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<p>On the other hand, to make it fit inside one screen (80 x 25), my program is
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shortened properly, more than it looks. (As you may know,
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<a href="https://en.wikipedia.org/wiki/Quine_(computing)">quines</a> need to make its
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program size doubled.) For example, this program involves 3x5 bitmap font data
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of ten characters (<code>0</code> – <code>9</code>), as just 20 bytes: <code>G1%xJ{;Q7wunmuGuu%uu</code>. We
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can decode character <code>n</code> as <code>275*s[n+10] - 8*s[n] - 8</code>. I solved the system of
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<a href="https://en.wikipedia.org/wiki/B%C3%A9zout%27s_identity">Bézout’s identity</a> to
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find the magic string, with the aid of a brute force. See <code>find-font-table.rb</code>
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in detail.</p>
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<p>I used many other tricks for short coding.</p>
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<p>I’m sorry that many ASCII-art-style winning entries of <a
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href="../../years.html">IOCCC</a> ignore <a
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href="https://en.wikipedia.org/wiki/C_preprocessor">C preprocessor
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directives</a>. In my program, <code>#include</code> is a part of
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ASCII-art with comments padded.</p>
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<p>I’m sorry that many ASCII-art-style winning entries of
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<a href="../../years.html">IOCCC</a> ignore <a href="https://en.wikipedia.org/wiki/C_preprocessor">C preprocessor
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directives</a>. In my program,
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<code>#include</code> is a part of ASCII-art with comments padded.</p>
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<p>These design requirements made my program well-obfuscated
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willy-nilly.</p>
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<h3 id="portability">Portability</h3>
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<p>I expect it to work in any major environment and C compiler. To build
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with no warning, it requires two C99 features: allow string literal to
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be more than 509 characters and not requiring a return in
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<code>main()</code>. In fact, recent compilers with
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<code>-std=c99 -Wall -W -Wextra -pedantic</code> would say nothing.</p>
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<p>I expect it to work in any major environment and C compiler. To build with no
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warning, it requires two C99 features: allow string literal to be more than 509
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characters and not requiring a return in <code>main()</code>. In fact, recent compilers
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with <code>-std=c99 -Wall -W -Wextra -pedantic</code> would say nothing.</p>
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<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a><span class="fu">gcc</span> <span class="at">-std</span><span class="op">=</span>c99 <span class="at">-Wall</span> <span class="at">-W</span> <span class="at">-Wextra</span> <span class="at">-pedantic</span> spigot.c</span>
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<span id="cb5-2"><a href="#cb5-2" aria-hidden="true" tabindex="-1"></a><span class="fu">clang</span> <span class="at">-std</span><span class="op">=</span>c99 <span class="at">-Wall</span> <span class="at">-W</span> <span class="at">-Wextra</span> <span class="at">-pedantic</span> spigot.c</span></code></pre></div>
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<p>I’ve tested with gcc-4.6.3 and clang-3.0 on Linux (Ubuntu 12.04) and
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gcc-4.5.3 and clang-3.1 on Cygwin.</p>
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<p>I’ve tested with gcc-4.6.3 and clang-3.0 on Linux (Ubuntu 12.04)
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and gcc-4.5.3 and clang-3.1 on Cygwin.</p>
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<h3 id="synopsis">Synopsis</h3>
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<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a><span class="fu">cc</span> endoh2.c <span class="at">-o</span> endoh2</span>
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<span id="cb6-2"><a href="#cb6-2" aria-hidden="true" tabindex="-1"></a></span>
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@@ -249,60 +238,38 @@ gcc-4.5.3 and clang-3.1 on Cygwin.</p>
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<span id="cb6-19"><a href="#cb6-19" aria-hidden="true" tabindex="-1"></a><span class="fu">cc</span> 27182.c <span class="at">-o</span> 27182 <span class="kw">;</span> <span class="ex">./27182</span> <span class="op">></span> 271828.c <span class="kw">;</span> <span class="fu">cat</span> 271828.c</span>
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<span id="cb6-20"><a href="#cb6-20" aria-hidden="true" tabindex="-1"></a><span class="fu">cc</span> 271828.c <span class="at">-o</span> 271828 <span class="kw">;</span> <span class="ex">./271828</span> <span class="op">></span> 2718281.c <span class="kw">;</span> <span class="fu">cat</span> 2718281.c</span>
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<span id="cb6-21"><a href="#cb6-21" aria-hidden="true" tabindex="-1"></a><span class="ex">etc...</span></span></code></pre></div>
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<p>You can do <code>make everything</code> for the process (with no
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<code>cat</code>).</p>
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<p>You can do <code>make everything</code> for the process (with no <code>cat</code>).</p>
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<p>Note: The executable may return a failure (non-zero) exit status
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unless <code>-std=c99</code> option is given.</p>
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<h2 id="copyright-and-cc-by-sa-4.0-license">Copyright and CC BY-SA 4.0
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License:</h2>
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<p>This file is Copyright (c) 2023 by Landon Curt Noll. All Rights
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||||
Reserved. You are free to share and adapt this file under the terms of
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this license:</p>
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<h2 id="copyright-and-cc-by-sa-4.0-license">Copyright and CC BY-SA 4.0 License:</h2>
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<p>This file is Copyright (c) 2023 by Landon Curt Noll. All Rights Reserved.
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You are free to share and adapt this file under the terms of this license:</p>
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<pre><code>Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)</code></pre>
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<p>For more information, see:
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https://creativecommons.org/licenses/by-sa/4.0/</p>
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<p>For more information, see: https://creativecommons.org/licenses/by-sa/4.0/</p>
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<!-- START: this line starts content generated by: bin/output-index-inventory.sh -->
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<h1 id="inventory-for-2012endoh2"><a name="inventory"></a>Inventory for
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2012/endoh2</h1>
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<h1 id="inventory-for-2012endoh2"><a name="inventory"></a>Inventory for 2012/endoh2</h1>
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<p><a href="#top">Jump to top</a></p>
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<h2 id="primary-files">Primary files</h2>
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<ul>
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<li><a
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href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh2/endoh2.c">endoh2.c</a>
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- entry source</li>
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<li><a
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href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh2/Makefile">Makefile</a>
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- entry Makefile</li>
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<li><a
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href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh2/endoh2.orig.c">endoh2.orig.c</a>
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- original source</li>
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<li><a
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href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh2/try.sh">try.sh</a>
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- how to run</li>
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<li><a
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href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh2/find-font-table.rb">find-font-table.rb</a>
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- tool used to find the magic string</li>
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<li><a href="2012_endoh2.tar.bz2">2012_endoh2.tar.bz2</a> - download
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entry source</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh2/endoh2.c">endoh2.c</a> - entry source</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh2/Makefile">Makefile</a> - entry Makefile</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh2/endoh2.orig.c">endoh2.orig.c</a> - original source</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh2/try.sh">try.sh</a> - how to run</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh2/find-font-table.rb">find-font-table.rb</a> - tool used to find the magic string</li>
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<li><a href="2012_endoh2.tar.bz2">2012_endoh2.tar.bz2</a> - download entry source</li>
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</ul>
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<h2 id="secondary-files">Secondary files</h2>
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<ul>
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<li><a href="index.html">index.html</a> - entry home page</li>
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<li><a
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href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh2/.entry.json">.entry.json</a>
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- description of entry in JSON</li>
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<li><a
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href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh2/.gitignore">.gitignore</a>
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- list of files that should not be committed under git</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh2/.entry.json">.entry.json</a> - description of entry in JSON</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh2/.gitignore">.gitignore</a> - list of files that should not be committed under git</li>
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<li><a href=".path">.path</a> - directory path from top directory</li>
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<li><a
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href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh2/README.md">README.md</a>
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||||
- markdown source for index.html</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh2/README.md">README.md</a> - markdown source for index.html</li>
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</ul>
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<!-- END: next line ends content generated by: bin/output-index-inventory.sh -->
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Block a user